Considering non-linear filtering technique like Extended Kalman filtering with Expectation Maximization (EM). EM is an iterative technique but what is Kalman filtering? Is Kalman Filtering called iterative approach?
Adaptive signal processing algorithms like Least Mean Square and Recursive Least square (RLS) estimate weights at each time instant and then update them. Since, RLS has a recursive nature and it falls under adaptive technique, then does this mean that adaptive is another name for recursive?
What is the difference between adaptive and iterative terminologies? Are Kalman filtering and its nonlinear versions adaptive?
Q1: In short, is adaptive=recursive=iterative?
Q2: Where is EM and Kalman Filtering approaches categorized under and why?